Full range of... WE HAVE YOUR SOLUTION FOR HOT AIR... Babcock Wanson offers a complete range of purpose built Process Air Heaters for both direct and indirect air heating. HTV-N HTV-N is an indirect fired fresh or recirculated air heater which utilises an externally mounted process air fan. Air is heated by contact with the combustion chamber and the second pass tubes to reach the desired temperature. An optional economiser for very high efficiency operation is available. This method of operation provides effective heat transfer, reliable operation and low fuel consumption over an extended life. MIXBLOC The MIXBLOC direct fired airstream heater is designed to provide high temperature air with no flue gas losses. MIXBLOC can operate using the process air flow or an independent combustion air fan. Burners are constructed from multiple V elements assembled in differing configurations to suit the required heat output and process ductwork design. GASAIRBLOC High process air temperatures are provided by the GASAIRBLOC Heater. The Heater is direct fired using either gas or liquid fuels with independent combustion air supply to achieve air discharge temperatures of up to 1200 C. With direct heat input and no flue gas losses, the GASAIRBLOC provides very efficient operation for processes that need high temperature and can work with the clean products of combustion entrained with the heated air flow stream.
solutions for your... air heating needs HTV-N Indirect process air heater Output range: from 90 kw up to 7 MW HTV-N is Babcock Wanson s range of indirect fired process air heaters constructed to provide clean hot air at up to 350 C and supplied complete with fully matched burner for gas, LPG or oil firing. The perfect solution where high temperature air is required for processing needs. Using HTV-N there is no direct contact between the process air and the products of combustion. This solution is particularly suited to applications where a fixed flow of clean heated air is required for the process. The process air flow is fixed to ensure reliable heat transfer. A fully modulating burner provides exact control of the process air discharge temperature. Flexible operation: Fixed air flow for accurate control Air by-pass options available Constructions for both horizontal and vertical operation Each HTV-N is supplied complete with fully matched burner for gas or oil firing. Advantages: Simple, high efficiency operation No intermediary fluid No pressure system requirements No water treament or effluent requirements Minimal inspection and service requirements Constructed from carbon or stainless steel to the highest specification High efficiency: Fully modulating burner control Available with heated air recirculation Economiser options Low emissions in compliance with current and projected European Norms HTV-N are custom designed to suit the specific demands of each installation. Process air flow range between 1,000 to 100,000 kg/h with air discharge temperatures from 120 to 350 C. MIXBLOC Direct process air heater GASAIRBLOC Direct process air heater Babcock Wanson s air duct type burner. Output range: from 50 kw up to 20 MW MIXBLOC provides process air temperatures up to 800 C in standard form. Flexible: Natural gas, LNG or LPG fired Can be installed in small spaces and to suit an existing ductwork configuration Air flow can be varied to 50% at maximum rate in standard form or down to 10% using a dedicated combustion air fan Modulating regulation allows turndown ratios of up to 20:1 Suited to the harshest environments where long life and ease of operation are key to success. The GASAIRBLOC heater provides direct heated process air temperatures at up to 900 C, with up to 1200 C operation in special configuration. Typical Process duties: Ceramics Rotary kilns Lime production Aggregate drying Insulation material manufacture Paint drying GASAIRBLOC is the ideal solution for harsh environments and difficult fuels. Sturdy construction makes it suitable for heavy industrial and dusty environments. A generous combustion chamber allows operation with heavy oils, with the flame developing without being disturbed by the process air. Secondary mixing with the process air flow ensures simple, reliable, operation throughout the burner modulation range. Constructed for horizontal or vertical operation and to work upstream or downstream of the process air fan under positive or negative pressure. MIXBLOC Heater for chemical drying process Clay, cement and brickworks. Printing, coating and laminating. Industrial abrasive manufacture. Carbon regeneration. Fertiliser production. A gas fired GASAIRBLOC ready for despatch from our works
Solutions for your application Application - Indirect air heating HTV-N are perfectly suited to heating process air streams with very high moisture content or entrained water vapour. A typical high moisture content application is the drying of leafy products such as tea, herbs, spices or similar products that require quick heating to evaporate water content. HTV-N uses a high ratio of process air recirculation to reduce overall energy consumption. These specially designed heaters are fitted with additional inspection and cleaning doors, condensate drains, water resistant gaskets and utilise specialist welding procedures to reduce the risk of particulate deposits on the heating surface. The Babcock Wanson HTV-N Process Air Heating solution simplifies and reduces the total cost of installation and operation when compared to traditional indirect heating methods. Particularly when planning new installations, the reduced space demand and ease of operation greatly reduces overall cost and normal operating maintenance demand. HTV-N offers a simple method of providing clean, accurately controlled, heated air for food, milk and other liquid drying applications. Hot air from indirect method Special application HTV-N for Drying Product In Direct production of hot process air: No intermediate fluid No water treatment No steam vent or drains Smaller footprint Simpler installation No special operator certification Simple operation Faster start-up Reduced inspection requirements Equal or higher efficiency Lower risk (no pressure vessel) Steam Boiler Fresh Air High moisture process air heating using HTV-N Steam Application - Direct air heating Babcock Wanson provides specialist process air heating equipment to suit customer demand. Water Water Treatment Feed SYSTEM Process Air Heater Condensate SYSTEM Babcock Wanson has developed specialist process air heaters for a number of applications, including the ceramic industry, which have moved from liquid fuels to more environmentally friendly fuels such as syngas produced by the gasification of biomass. We also offer a range of burners in our process air heaters designed to operate with very low calorific value gases (4000-6000 MJ/Nm3). Fresh Air Hot Air Hot air from process air heater This solution is particularly suited to countries where a natural gas infrastructure may not be available. MIXBLOC ready for installation Babcock Wanson UK Limited 7 Elstree Way, Borehamwood, Hertfordshire, WD6 1SA UK Tel: +44 (0) 20 8953 7111 Email: info@babcock-wanson.co.uk www.babcock-wanson.co.uk Process Air Heating JULY 2018 Digital version - Issue 1